Según, conforme and a medida que may introduce temporal clauses expressing that the action in the subordinate clause happens at the same time as the action in the main clause. They have a similar function as the more common conjunction mientras.
Let's see some examples:
The three conjunctions are interchangeable and they all allow different tenses as well as the subjunctive. Using the subjunctive will depend on the action being seen as a future action. The second example above with conforme reflects a future action (Mañana en la reunión, conforme yo apunte...")
It is very common to find these conjunctions with the structure "Ir + gerund", which accentuates the progression of an action.
See also Según / conforme = as / as per / according to in Spanish (subordinate manner clause)
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